A smart infusion pump can help deliver the right dose. A wearable heart monitor can send patient data to clinicians in real time. A connected imaging system can move scans across departments without someone carrying a disk around the hospital. That convenience is exactly what makes healthcare IoT so valuable. It is also what makes healthcare IoT device security harder than traditional IT security.
The Internet of Medical Things, or IoMT, kind of links medical devices, sensor networks, wearables, software and hospital systems, so they can pass along data and assist care. Still, each time you add a new connection there’s also another route that attackers can try, test and prod. So healthcare IoT device security becomes a patient safety issue, not just an IT matter
This piece looks at the most notable risks like outdated legacy gear, weak credentials, and even poor network segmentation and then it goes on to say what hospitals can actually do about it. For example, using zero trust, continuous vulnerability management, locked-down updates, encryption, and security-by-design, which is basically building protections in from the start.
The Rise of IoMT and Why Medical Devices Are a Prime Target
Healthcare has steadily moved from isolated medical equipment toward connected systems. Patient monitors communicate with clinical platforms. Wearables send readings to applications. Imaging equipment connects with storage and diagnostic systems. As this ecosystem expands, healthcare IoT device security becomes harder because hospitals are no longer protecting individual machines. They are protecting an interconnected environment.
That creates an uncomfortable reality. A device does not need to hold a large amount of patient information to become valuable to an attacker. It may simply provide a path into something that does.
Legacy technology makes that path even more attractive. Some medical devices stay in service for years but the underlying software, credentials and security controls tend to age way faster, almost like it doesn’t really matter. If a connected system stays exposed, unpatched, or just poorly configured it can end up being the weakest link in a much bigger network
Microsoft Threat Intelligence, reported in April 2026, said that Storm-1175 was running high-tempo Medusa ransomware operations, by leveraging vulnerable internet-facing systems. Microsoft also noted that adversaries could jump from initial exploitation to data exfiltration and then ransomware deployment within a few days, and in some cases within just 24 hours. Recent intrusions heavily affected healthcare organizations in Australia, the UK and the United States.
The lesson for healthcare leaders is straightforward. Healthcare IoT device security cannot begin after an incident. By then, the attacker may already be inside.
What Are the Biggest Healthcare IoT Device Security Risks?
Legacy Operating Systems and Hardcoded Passwords
One of the hardest problems in healthcare IoT device security is the gap between the useful life of medical equipment and the security life of its software.
An MRI machine, patient monitor or other expensive system may remain operational long after the operating system supporting it becomes outdated. Replacing the entire machine simply because its software needs an upgrade is rarely a simple decision. Clinical workflows, budgets, vendor contracts and regulatory considerations all come into play.
The result is a difficult trade-off. Hospitals may have devices that still perform their clinical function but no longer fit comfortably within a modern security environment.
IMDRF’s N70 guidance specifically addresses the cybersecurity challenges associated with legacy medical devices. That matters because it frames older equipment as a lifecycle security problem rather than treating it as ordinary outdated IT.
Hardcoded or difficult-to-change credentials make the problem worse. If a device uses weak authentication and the hospital cannot properly update or replace those credentials, healthcare IoT device security becomes dependent on compensating controls around the device.
Lack of Encryption
Medical devices can generate highly sensitive information. Heart-rate readings, diagnostic images, medication information and other clinical data can move between devices, applications and hospital systems.
Without the right encryption, sensitive details end up being more exposed when they are passing between these systems, or even sitting stored on them. For that reason, proper healthcare IoT device security really depends on hospitals understanding where the data travels, who has access to it, and how it is guarded at each step, not just ‘overall.’
Encryption should not be treated as a box that gets checked during procurement. It should be part of the broader data-security architecture.
The Flat Network Problem
A connected medical device does not exist in isolation. It sits somewhere inside a hospital’s wider technology environment.
That becomes dangerous when networks are poorly segmented. If an attacker compromises one connected device, unrestricted access to other systems can create opportunities for lateral movement. A compromised device should not automatically become a bridge to pharmacy systems, administrative applications or patient databases.
This is where healthcare IoT device security becomes an architectural problem. Hospitals cannot rely on every device being perfectly secure. They need the network to limit what happens when one device is compromised.
The Real-World Impact of Ransomware on Patient Safety
Ransomware in healthcare is not simply a story about stolen files and financial losses. The bigger concern is disruption.
A hospital really has to rely on connected technology to keep eyes on patients, get clinical info fast, coordinate the different departments, and support treatment. But when critical systems turn out to be offline, or just suddenly stop, clinicians might end up reverting to manual workflows, causing workflow delays or having to improvise ways to provide care.
In the CISA 2026 cybersecurity advisory catalogue there are active alerts for the healthcare and public health sectors, including ones tied to ransomware. Then on August 10, 2026, CISA put out an alert about Gunra ransomware that clearly named healthcare and public health as sectors that could be impacted.
That reinforces a point that healthcare organizations sometimes learn the hard way. Healthcare IoT device security is not about protecting machines for the sake of protecting machines. It is about protecting the clinical processes that depend on those machines.
A ransomware incident that disrupts a connected environment can therefore move the conversation from cybersecurity operations to patient safety very quickly.
How Can Hospitals Protect Connected Medical Devices?
Implement Zero Trust and Micro-Segmentation
The first principle should be simple. A connected medical device should not automatically be trusted just because it sits inside the hospital.
Zero trust changes that assumption. Access should depend on identity, context, device status and the specific resource being requested. Micro-segmentation adds another layer by placing IoMT devices into controlled network zones.
That way, a compromised patient monitor does not automatically provide a route into unrelated clinical or administrative systems. This limits lateral movement and reduces the potential impact of a breach.
NIST’s 2026 publication catalogue includes an initial public draft of SP 800-213 Rev. 1, dated June 24, 2026, focused on establishing IoT product cybersecurity requirements. Its catalogue also includes the related IoT Device Cybersecurity Requirement Catalog SP 800-213A and continued work around IoT product requirements, secure enterprise networking, zero-trust architecture and software supply-chain security.
For healthcare organizations, the practical takeaway is clear. Network architecture should assume that connected devices can eventually be compromised.
Build Continuous Vulnerability Management
Hospitals cannot secure devices they do not know they have.
That makes automated asset discovery a basic requirement for healthcare IoT device security. Security teams need visibility into connected devices, their software, network location, ownership, exposure and security status.
The next step is a clear vulnerability-management process, but like, Teams should identify weaknesses and then assess their clinical and security impact, prioritize remediation, and apply updates where vendors actually support them.
When patching just is not possible, then compensating controls become essential. Things like network isolation, restricted access, and closer monitoring can reduce exposure while the hospital works with the manufacturer on a more long-term solution.
The key is continuity. A one-time device inventory is not enough, because the environment changes constantly, even when nobody notice.
Enforce End-to-End Encryption
Encryption should protect sensitive information both while it moves and while it is stored.
Hospitals should therefore evaluate how each connected device handles data in transit and at rest. They should also examine the connections between devices, applications, cloud services and clinical systems.
This matters because healthcare IoT device security can fail at the connection point even when the device itself appears secure. A strong device connected through a weak or poorly protected pathway still creates risk.
Encryption should therefore become a procurement requirement, not an afterthought.
Demand Security-by-Design from Manufacturers
Hospitals also have leverage before a device ever enters the network.
Procurement teams should ask manufacturers how cybersecurity is built into the product lifecycle. They should understand how vulnerabilities are reported, how software updates are delivered, how long security support will continue and what happens when a critical vulnerability affects a deployed device.
SBOMs can add another layer of visibility by helping hospitals understand the software components inside connected products. That matters when a vulnerability affects a widely used software component.
NIST’s 2026 work around IoT product cybersecurity requirements and software supply-chain security strengthens this procurement-first approach. Healthcare organizations should not treat cybersecurity as something the hospital has to repair after buying the device.
Better healthcare IoT device security begins before deployment. The purchasing decision itself should test whether the manufacturer can support the device securely throughout its useful life.
Navigating the Regulatory Landscape with FDA and Healthcare Compliance
The regulatory direction is becoming harder to ignore.
The FDA published its final Cybersecurity in Medical Devices guidance in February 2026. The guidance covers cybersecurity in device design, labeling and documentation in premarket submissions for devices with cybersecurity risk, and addresses Section 524B of the FD&C Act for ‘cyber devices.’ The 2026 version supersedes the June 2025 final guidance.
That shift matters because cybersecurity is increasingly being considered before a medical device reaches the hospital, not only after deployment.
For healthcare organizations, compliance should also extend beyond the device itself. Connected systems can process protected health information, so hospitals need to consider applicable privacy and security obligations alongside their broader healthcare IoT device security strategy.
The bigger message is that regulation and cybersecurity are moving in the same direction. Manufacturers must take security more seriously, while hospitals must become more demanding buyers.
Conclusion and Next Steps for Healthcare IT
The biggest mistake healthcare leaders can make is treating connectivity and security as separate projects.
Connected devices are now part of how modern care works. Removing that connectivity is neither realistic nor desirable. The smarter approach is to make the connected environment harder to exploit and easier to contain when something goes wrong.
That means hospitals need visibility into every connected device, stronger network boundaries, continuous vulnerability management, encryption and better procurement standards. More importantly, they need to stop asking whether a device is secure today and start asking whether it can remain secure throughout its useful life.
Healthcare IoT device security is ultimately a resilience problem. IT leaders should audit their connected-device environment now, identify the systems they cannot adequately protect and work with vendors to close those gaps before an attacker does.